/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.fontbox.cmap;
/**
* Range of continuous CIDs between two Unicode characters.
*/
class CIDRange {
private char from;
private char to;
private int cid;
public CIDRange(char from, char to, int cid) {
this.from = from;
this.to = to;
this.cid = cid;
}
/**
* Maps the given Unicode character to the corresponding CID in this range.
*
* @param ch Unicode character
* @return corresponding CID, or -1 if the character is out of range
*/
public int map(char ch) {
if (from <= ch && ch <= to) {
return cid + (ch - from);
} else {
return -1;
}
}
/**
* Maps the given CID to the corresponding Unicode character in this range.
*
* @param code CID
* @return corresponding Unicode character, or -1 if the CID is out of range
*/
public int unmap(int code) {
if (cid <= code && code <= cid + (to - from)) {
return from + (code - cid);
} else {
return -1;
}
}
}